Electrochemical behaviour of the LiF-(CaF2)-La2O3 system

被引：11

作者：

Ambrova, Marta ^{[1
]}

Jurisova, Jana ^{[1
]}

Sykorova, Alexandra ^{[1
]}

Uher, Dalibor ^{[1
]}

Danielik, Vladimir ^{[1
]}

Hives, Jan ^{[1
]}

机构：

[1] Slovak Univ Technol Bratislava, Inst Inorgan Chem, SK-81237 Bratislava, Slovakia

来源：

CHEMICAL PAPERS | 2008年 / 62卷 / 02期

关键词：

lanthanum; molten fluorides; cyclic voltammetry; spent nuclear fuel;

D O I：

10.2478/s11696-008-0005-3

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electrochemical behaviour of the LiF-La2O3 and LiF-CaF2-La2O3 systems was investigated by means of cyclic voltammetry. Several types of working electrodes (spectrographic pure graphite, W, Mo, Ni, Cu) were used. It was found that chemical reactions take place in the system during the dissolution of lanthanum oxide. The reduction of lithium cations occurred at the most positive potential from the species formed in the melt on 'inert' cathodes (W, Mo). The reactive cathodes (Cu, Ni) allowed the lanthanum deposition with depolarisation. (c) 2008 Institute of Chemistry, Slovak Academy of Sciences.

引用

页码：154 / 159

页数：6

共 18 条

[1] On the solubility of lanthanum oxide in molten alkali fluorides [J].

Ambrova, M. ;

Jurisova, J. ;

Danielik, V. ;

Gabcova, J. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2008, 91 (02) :569-573

[2]

AMBROVA M, 2007, P INT YOUTH C EN MAY, P209

[3]

BERUL SI, 1963, ZH NEORG KHIM+, V8, P1431

[4] Electrochemical behaviour of gadolinium ion in molten LiCl-KCl eutectic [J].

Caravaca, C. ;

de Cordoba, G. ;

Tomas, M. J. ;

Rosado, M. .

JOURNAL OF NUCLEAR MATERIALS, 2007, 360 (01) :25-31

[5] Application of electrochemical techniques in pyrochemical processes -: Electrochemical behaviour of rare earths at W, Cd, Bi and Al electrodes [J].

Castrillejo, Y. ;

Bermejo, R. ;

Martinez, A. M. ;

Barrado, E. ;

Diaz Arocas, P. .

JOURNAL OF NUCLEAR MATERIALS, 2007, 360 (01) :32-42

[6] Feasibility of the electrochemical way in molten fluorides for separating thorium and lanthanides and extracting lanthanides from the solvent [J].

Chamelot, P. ;

Massot, L. ;

Hamel, C. ;

Nourry, C. ;

Taxil, P. .

JOURNAL OF NUCLEAR MATERIALS, 2007, 360 (01) :64-74

[7]

CHAMELOT P, 2005, P 7 INT S MOLT SALTS, V2, P615

[8]

Chase M.W., 1998, NIST-JANAF Themochemical Tables, V4th, P1753

[9]

Fedorov PP, 1999, RUSS J INORG CHEM+, V44, P1703

[10] Neodymium(III) cathodic processes in molten fluorides [J].

Hamel, C ;

Chamelot, P ;

Taxil, P .

ELECTROCHIMICA ACTA, 2004, 49 (25) :4467-4476

← 1 2 →